PLK1 and colorectal cancer: The results showed that in colorectal cancer, the expression of SLC35A2 was positively correlated with the expression of four MYC-associated genes, including MYC, Cyclin dependent kinase 4 (CDK4), Polo like kinase 1 (PLK1), and Pescadillo ribosomal biogenesis factor 1 (PES1) (Figure 5D).